diff --git a/Modules/ossaudiodev.c b/Modules/ossaudiodev.c
index ebf101a..8cc9462 100644
--- a/Modules/ossaudiodev.c
+++ b/Modules/ossaudiodev.c
@@ -366,10 +366,10 @@
 
     if (!PyArg_ParseTuple(args, "i:read", &size))
         return NULL;
-    rv = PyString_FromStringAndSize(NULL, size);
+    rv = PyBytes_FromStringAndSize(NULL, size);
     if (rv == NULL)
         return NULL;
-    cp = PyString_AS_STRING(rv);
+    cp = PyBytes_AS_STRING(rv);
 
     Py_BEGIN_ALLOW_THREADS
     count = read(self->fd, cp, size);
@@ -381,7 +381,7 @@
         return NULL;
     }
     self->icount += count;
-    _PyString_Resize(&rv, count);
+    PyBytes_Resize(rv, count);
     return rv;
 }
 
@@ -391,7 +391,7 @@
     char *cp;
     int rv, size;
 
-    if (!PyArg_ParseTuple(args, "s#:write", &cp, &size)) {
+    if (!PyArg_ParseTuple(args, "y#:write", &cp, &size)) {
         return NULL;
     }
 
@@ -422,7 +422,7 @@
        mode, the behaviour of write() and writeall() from Python is
        indistinguishable. */
 
-    if (!PyArg_ParseTuple(args, "s#:write", &cp, &size))
+    if (!PyArg_ParseTuple(args, "y#:write", &cp, &size))
         return NULL;
 
     /* use select to wait for audio device to be available */
@@ -811,20 +811,20 @@
         Py_INCREF(rval);
     }
     else if (strcmp(name, "name") == 0) {
-        rval = PyString_FromString(self->devicename);
+        rval = PyUnicode_FromString(self->devicename);
     }
     else if (strcmp(name, "mode") == 0) {
         /* No need for a "default" in this switch: from newossobject(),
            self->mode can only be one of these three values. */
         switch(self->mode) {
             case O_RDONLY:
-                rval = PyString_FromString("r");
+                rval = PyUnicode_FromString("r");
                 break;
             case O_RDWR:
-                rval = PyString_FromString("rw");
+                rval = PyUnicode_FromString("rw");
                 break;
             case O_WRONLY:
-                rval = PyString_FromString("w");
+                rval = PyUnicode_FromString("w");
                 break;
         }
     }
@@ -913,12 +913,12 @@
     if (labels == NULL || names == NULL)
         goto error2;
     for (i = 0; i < num_controls; i++) {
-        s = PyString_FromString(control_labels[i]);
+        s = PyUnicode_FromString(control_labels[i]);
         if (s == NULL)
             goto error2;
         PyList_SET_ITEM(labels, i, s);
 
-        s = PyString_FromString(control_names[i]);
+        s = PyUnicode_FromString(control_names[i]);
         if (s == NULL)
             goto error2;
         PyList_SET_ITEM(names, i, s);